@bg-color: #b7d4a8;
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
h2 {
  width: 100%;
  text-align: center;
  font-family: 'Courier';
  position: absolute;
  top: 40px
}
#main {
  width: 360px;
  height: 420px;
  background-color: @bg-color;
  margin: 100px auto;
  border: 10px solid black;
  border-radius: 40px;
  display: flex;
  flex-flow: column wrap;
  align-items: center;
  justify-content: space-around;

  #stage {
    width: 304px;
    height: 304px;
    border: 2px solid black;
    position: relative;
    #snake {
      &>div {
        width: 10px;
        height: 10px;
        background-color: black;
        border: 1px solid @bg-color;
        // 绝对定位
        position: absolute;
      }
    }
    #food {
        width: 10px;
        height: 10px;
        position: absolute;
        background-color: aquamarine;
        left: 40px;
        top: 100px;
        display: flex;
        flex-flow: row wrap;
        justify-content: space-between;
        align-content: space-between;
        div {
            width: 4px;
            height: 4px;
            background-color: black;
            transform: rotate(45deg);
        }
    }
  }

  #score-panel {
    width: 300px;
    display: flex;
    justify-content: space-between;
  }
}

body {
  font: bold 20px "Courier";
}
